A smartphone-assisted photoelectrochemical POCT method via Z-scheme CuCo 2 S 4 /Fe 3 O 4 for simultaneously detecting co-contamination with microplastics in food and the environment

文献类型： 外文期刊

第一作者： Zeng, Jing

作者： Zeng, Jing;Chen, Xiao;Wu, Huimin;Zeng, Jing;Zhang, Zhaowei;Wu, Wenqin;Wang, Shenling;Li, Peiwu;Zhang, Zhaowei;El-Kady, Ahmed A.;Poapolathep, Amnart;Cifuentes, Alejandro;Ibanez, Elena

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关键词： Microplastics; Dibutyl phthalate; Benzo[a]pyrene; Photoelectrochemical biosensor; Food safety; Environment monitoring

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2024 年 452 卷

页码：

收录情况： SCI

摘要： As emerging contaminants, microplastics threaten food and environmental safety. Dibutyl phthalate (DBP, released from microplastics) and benzo[ a ]pyrene (BaP, adsorbed on microplastics) coexisted in food and the environment, harming human health, requesting a sensitive and simultaneous testing method to monitor. To address current sensitivity, simultaneousness, and on -site portability challenges during dual targets in complex matrixes, CuCo 2 S 4 /Fe 3 O 4 nanoflower was designed to develop a smartphone-assisted photoelectrochemical point-of-care test (PEC POCT). The carrier transfer mechanism in CuCo 2 S 4 /Fe 3 O 4 was proven via density functional theory calculation. Under optimal conditions, the PEC POCT showed low detection limits of 0.126, and 0.132 pg/mL, wide linearity of 0.001 - 500, and 0.0005 - 50 ng/mL for DBP and BaP, respectively. The smartphone-assisted PEC POCT demonstrated satisfied recoveries (80.00% - 119.63%) in real samples. Coherent results were recorded by comparing the PEC POCT to GC - MS (DBP) and HPLC (BaP). This novel method provides a practical platform for simultaneous POCT for food safety and environment monitoring.

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